Home / 208,226.09-312,156.79-100,101.42

Finding the Fourth Proportional to 208,226.09, 312,156.79 and 100,101.42

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Solution

The fourth proportional to 208,226.09, 312,156.79 and 100,101.42 is: 150,064.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,226.09 : 312,156.79 = 100,101.42 : x
  2. Step 2: Convert to fraction form
    208,226.09/312,156.79 = 100,101.42/x
  3. Step 3: Cross multiply
    208,226.09x = 312,156.79 × 100,101.42
  4. Step 4: Simplify right side
    208,226.09x = 31,247,337,691.39
  5. Step 5: Solve for x
    x = 31,247,337,691.39/208,226.09
  6. Step 6: Final answer
    x = 150,064.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.